Totally anecdotally, but I see a small crowd of people from what I assume is the US at local Starbucks here in Poland, always studying medicine or just hanging together. They all look like they're maybe 25-35 so perhaps it's people who also took a nonconventional path to study medicine and decided that getting the degree in Poland makes sense for whatever reason (probably costs, maybe also difficulty in admission? In Poland you only need to do well on a test to get into med school, there are no courses pre-required).